#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <unistd.h>
#include <fcntl.h>
#include <ctype.h>

#define LNSIZE 80           /* max length of an input line */
#define IFCOUNT 15           /* max number of interfaces per host */
#define BUFSIZE 4096        /* max size of a record */
#define MAXOBJECTS 10000    /* max number of objects in linked list */

/* contains all the interfaces for a single object */
/* only for machines with multiple interfaces, like firewalls or gateways. */
typedef struct interface {
  char ipaddr[LNSIZE];            /* IP address of interface */
  char netmask[LNSIZE];           /* netmask of interface */
  char ifname[LNSIZE];            /* interface name (if0, nf0:1, ... ) */
} interface;

/* linked list structure to store all objects in objects.C */
typedef struct objlist {
  int objcount;                   /* object number */
  char *group[LNSIZE];            /* stores objects of type 'group' */
  char objname[LNSIZE];           /* host, network, or group name of object */
  char type[LNSIZE];              /* contains type of object */
  char ipaddr[LNSIZE];            /* IP address of object */
  char netmask[LNSIZE];           /* netmask of object */
  char gateways[LNSIZE];          /* gateway for this object */
  char broadcast[LNSIZE];         /* broadcast for this object */
  struct interface iface[IFCOUNT];/* dynamic array of all object's interfaces */
  struct objlist *nodelink;       /* pointer to next structure element */
} objlist;

/* defines pointers to linked list of each individual entry of service */
objlist *ohead, *oprev, *opresent, *onext, *otail;

void find_obj(char *objectsC);

/* Allocate initial memory for the objects structure */
void initobjlist(void);

/* print out one object found by calling dumpnet() */
void dumpnetobj(int verbose);

/* determine if we are printing one object or all of them, as defined
 * by the -n argument
 */
void dumpnet(char *netname, int verbose);

/* find the next object among the list */
void find_group(char *grpname);

/* This routine parses the objects fed to it from the find_obj()
 *  and breaks it into tokens to be inserted into linked list
 */
void parse_obj(FILE *fp, int objcount, char *objname);

/* used to turn hostname/group into IP address and other information */
int resolv_dst(char *rule_dst);
int resolv_svc(char *rule_svc);

void dump_resolv(int verbose);